223 Saint Paul describes kindness as a fruit of the Holy Spirit ( Gal 5:22). He uses the Greek word chrestótes , which describes an attitude that is gentle, pleasant and supportive, not rude or coarse. Individuals who possess this quality help make other people’s lives more bearable, especially by sharing the weight of their problems, needs and fears. This way of treating others can take different forms: an act of kindness, a concern not to offend by word or deed, a readiness to alleviate their burdens. It involves “speaking words of comfort, strength, consolation and encouragement” and not “words that demean, sadden, anger or show scorn”.
Source: Fratelli Tutti (Vatican.va)